Sawtooth Avalanche Center

Pro Field Report

Basic Information

Observation Details

Observation Date:
February 28, 2023
Submitted:
February 28, 2023
Observer:
SAC - Jon Preuss (off duty)
Zone or Region:
Galena Summit and Eastern Mtns
Location:
Titus Ridge (SE-E-NE; 8700-9900')

Signs of Unstable Snow

Recent Avalanches? 
Yes
Cracking? 
Isolated
Collapsing? 
None Experienced

Bottom Line

A quick tour to the top of the Titus Lake Chutes to verify any avalanche activity. The Lake Chutes had less wind-affected snow in the start zones than I anticipated, given the light-density snow and moderate winds. The avalanche in Walcher's bowl looked wind induced from cross loading above and likely failed on weak, sugary snow from the 2/18 interface based on the depth of the crown.

Media/Attachments

(2/28/23) This avalanche released along Titus Ridge on a NE aspect near 9400'.
(2/23/23) A thin crown on a steep southeast facing slope around 9400'. A number of crusts formed prior to the recent snow and is likely the failure plane of this avalanche.

Advanced Information

Weather Summary

Cloud Cover:
Overcast
Wind:
Light , SW
New/Recent Snowfall:
HST 25cm

Snow showers were on and off through the afternoon, with brief clearings. Winds were gusty and transporting snow in upper elevations. The light snow was able to be thrown further down slope than normal.

Avalanche Observations

 #  Date Location Size Type Bed Sfc Depth Trigger Comments Photo
1 Titus Ridge "Walcher's Bowl"
NE 9400'
D1.5 SS 1-2' N-Natural
(2/28/23) This avalanche released along Titus Ridge on a NE aspect near 9400'.
1 Titus Ridge
SE 9,400'
D1 SS I-New/Old Interface N-Natural Avalanche appeared to fail on a melt freeze crust at the new/old interface.
(2/23/23) A thin crown on a steep southeast facing slope around 9400'. A number of crusts formed prior to the recent snow and is likely the failure plane of this avalanche.

Avalanche Problems

Problem Location Distribution Sensitivity Size Comments
Wind Slab
Isolated
Specific
Widespread
Unreactive
Stubborn
Reactive
Touchy
D1
D1.5
D2
D2.5
D3
D3.5
D4
D4.5
D5
Comments: Based on observed natural activity and wind-loading at ridgeline.